Milling-machine.



No. 685,934. 7 I Patented Nov. 5, l90l. H. M06. NORRIS.

MILLING MACHINE.

(Application filed Mar. 6, 1901.)

("v'mdeld 2 Sheets-Sheet I.

Patented Nov. 5, I90].

H. M66. NORRIS.

MILLING MACHINE.

(Application filed Mar. 6, 1901.)

2 Sheeis-Sheet 2.

(No Model.)

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NITED STATES PATENT @FFICE.

HENRY MoCOYNORRIS, or CINCINNATI, OHIO.

MILLING- MACHINE.

SPECIFICATION formingpart of Letters Patent No. 685,934, dated November5, 1901.

Application filed March 6, 1901.

T0 66 whom, it ntctyconcern:

Be it known that I, HENRY MCCOY NORRIS, a citizen of the United States,residing at Oincinnati,in the county of Hamilton and State of Ohio, haveinvented certain new and useful Improvements in Milling-Machines, ofwhich the following is'a specification.

My invention relates to an improvementin milling-machines.

One of the objects of my invention is to provide a multiple ofcutter-spindles in a single machine mounted in the same horizontal planeand driven from a common powershaft.

Another object of my invention is to provide a multiple of traversingplatens driven from a common power-shaft.

Other objects of my invention are to pro- The featuresof my inventionare more fully set forth in the description of the accompanyingdrawings, making a part of this specification, in which- Figure 1 is aperspective view of my mul-jv tiple-spindle gear-cutter. Fig. 2 is ahorizontal section of the bed, showing the position of themain"driving-shaft. elevation of the swivel-head for supporting thework. Fig. 4 is a top plan view thereof. Fig. 5 is a central section ofthe platen and swivel-head. Fig. 6 is a sectional elevation of thecutter-head. Fig. 7 is a detail sectional view of the longitudinalplaten-adj ustment means. Fig. 8 is a top plan View of the spur-gearhead-stock.

A represents the bed of the machine-sitting upon the pedestals A A, toone end of which is attached the bracket-arm A supporting thepulley-shaft A on which are mounted the belt-pulleys A A Thispulley-shaft projects through the end frame of the machine. (See Fig.2.) Between the Fig; 3 is a side Serial No. 50,073- (No model.)

outer face of this end frame and the pulleywheels is mounted agear-wheel 1.

B represents a shaft journaled in each end of the bed-plate, having oneend projected through the end of the frame. Upon this pro jected end isfixed a gear-wheel 2, in mesh with gear-wheel 1. This shaft B representsthe common spindle-operating shaft. Upon the inner end of the belt-shaftA is a bevelgear 3.

0 represents a shaft journaled in the sides of the frame transversely tothe shaft 13. Upon the inner end of this shaft G, within the frame, isfixed the bevel gear-wheel 4, in mesh with the bevel gear-wheel 3. Uponthe outer end of shaft 0, projected through the front side of the frame,is formed a worm 5.

D represents a shaft exteriorly journaled in the frame of the machinelongitudinally, upon the front end of which is a worm-wheel 6, in meshwith the worm 5, from which it is driven. D represents a guard coveringthe Worm 5 and worm-wheel 6. This shaft D represents the commonfeed-shaft for traversing the multiple platens. (See Fig. 1.)

As the machine is illustrated there are four separate cutters. As themechanisms entering into each of these cutter-heads is the duplicate ofthe other, a description of one of them will suiiice.

Looking at Fig. 1, E represents the headstock, in which the verticalspindle E is mounted, upon which spindle is the gear-cutter E Thisvertical spindle extends from the interior of the frame upwardly, asshown in Fig. 6. Upon the lower end of the spindle is fixed a bevel-gear7, meshing with bevelgear 8, mounted on a sleeve E on the commonspindle-driving shaft B. Upon shaft B is a sliding clutch member ESleeve E and clutch E have teeth adapted to intermesh, whereby spindle Eis connected and disconnected to and from shaft 13. To the slidingclutch member E is attached a lever F, projected upwardly above the bed,as shown in Fig. 1, and it is obvious that the operation of this levercontrols the driving relationship between the common spindle-shaft B andthe spindle-shaft E. This cutter, it will be observed, is rotary on avertical axis. This allows a multiple of head-stocks to be all mountedentirely above the bed, enabling the work to be presented to eachspindle by means of an ordinary traversing platen instead of having tobe raised and lowered on a framework, as in the conventional style ofmilling-machines.

The feature of employing in a milling-machine a multiple of spindleseach carrying a cutting-tool rotary on a vertical axis and all mountedabove the bed and receiving power from devices interior to the bed is anovel and very useful feature, giving the greatest possible capacity andefficien cy with the least possible mechanism and space. The machineembodying this feature of my said invention is a result that ispossessed of superior mechanical and commercial value.

A description of one of the series of four platens with its drivingmechanisms will also suffice for all.

G represents the platens, mounted on transverse ways G, (see Fig. 5,)arranged on the frame or bed. Upon the front corner of the ways G islocated a depending bracket 9, carrying at its lower end a swingingbracket g, within which is a bevel gear-wheel 9, adapted to turn withsaid common platen-driving shaft D and to slide thereon as the platen isadjusted longitudinally. (See Figs. 1 and 5.)

H represents the feed-screw for the platen. (See Fig. 5. 12 represents aspur gear-wheel, fixed to the outer end of said feed-screw, and Hrepresents a hand-wheel on said feed-screw.

71. represents a stud-sleeve in which is a stud-shaft h. Upon the innerend of this stud-shaft is fixed a bevel gear-wheel 10, meshing withbevel gear-wheel 9 on shaft D. 11 represents a spur gear-wheel fixed tothe front end of said'stud-shaft h, meshing with spur gear-wheel 12 todrive by power the feedshaft H. (See Fig. 5.) Gearsll and 12 may betaken off and be substituted by gears of other ratios in order to varythe rate of feed. The sleeve h is connected to and forms a part of theswinging bracket g, the entire bracket being pivoted on shaft D and itsouter or swinging end being detachably supported for engaging anddisengaging spur-gears 11 and 12 by the following mechanisms:

b represents a sleeve on screw H, attached to the ways G. From thissleeve is suspended a slotted link I), engaging and supporting a lug onthe depending link Z), attached to the side of the sleeve h. (See Fig.5.) A depending lever d is pivoted to the sleeve b the lower end ofwhich forms a catch engaging a lug formed on the stud-sleeve opposite tothe linksupport. WVhen this 1ever,. supporting the front end of sleeveh, is depressed, the bracket g, with its supported sleeve h, stud-shafth, and gear 11, swings down to the lower end of the slottedlink-support. It may be raised by hand for rengaging gears 11 and 12.

Thus far means have been described for independently controlling therelationship between the common spindle-shaft and its separate spindlesand the driving relationship between the common platen-driving shaft andits several platen-feed shafts. It is of course obvious that these meanscould be variously modified for accomplishing these ends with-' Jrepresents an adjusting-screw one end of which has screw-threadedengagement with the support G, tapping the same longitudinally, the saidsupport being adapted to slide in a longitudinal direction on the frameor bed. To the front end of adjusting-screw J is fixed bevel gear-wheel14, meshing with bevel gear-wheel 13.

J represents an indexfinger supported over the dial, as shown in Fig. 1.

J represents a clamp-lock on the shaft J for locking the disk againstrotation after the proper longitudinal adjustment of the platen isobtained.

The front end of screw-shaft J is journaled in a depending apron J ofthe head-stock E. When the supporting-ways are adjusted longitudinally,the bracket g, with its swinging bracket g and contained gears fordriving the platen-feed screw, slide with said ways G on themachine-bed.

In Fig. Sis shown an automatic stop for the platen-feed shaft H. Itconsists of a lug 7c, fixed on the platen in position to engage anddepress lever d at the end of the power-driven travel of the platen andto disengage it, so that the platen may be reciprocated by hand.

Fig. 8 illustrates the means preferably employed for supporting thespur-gears. K represents a peripherally-notched tooth-spacing disk,mounted on an internally-tapered sleeve K the said sleeve beingsupported in the bearing-collar K on the platen G. K represents thework-supporting shaft, the rear end of which is supported by thetail-stock K the front end being externally tapered to fit the taperedsleeve K the end of the said tapered shaft K being screw-threaded toreceive the screw K which passes from a point outside of thespacing-disk K through the said sleeve K to engage into the end of shaftK. K represents the gears to be cut fixed to the shaft K When the screwK is turned up, the shaft K is clamped into the sleeve K and it may befixed against rotation by turning up the clamp-nut K", which engages thetapered sleeve K and clamps the flanged head of said sleeve against theabutting face of the bearing-collar K I will now describe the supportfor the mitergear work. It consists in a swiveling head L, mounted on aturret L and adapted to rotate thereon. The turret is supported onbedbored to receive the work N.

plates M M, bolted together, the upper face of the bed-plate M having anindex on, adapted to show the degree of rotation of theswiveled head.Within the head is mounted a barrel N, rotative on its axis andcentrally The work-supporting end of this barrel is upturned and formsan end bearing against the surrounding end of the swiveled head. Theother end of this barrel is screw-threaded to receive the notched disks0 O, which bear against the front end of the swiveled head. 0 representsa clamp-nut secured on the screw-threaded end of said barrel after thenotched disks to secure them in position. 19 represents a bolt passingcentrally through the barrel, its outer end being screw-threaded intothe work and clamping it in position in the barrel. The swiveled head isrotated horizontally until the bottom of the cut to be made is inparallel vertical plane with the vertical edge of the platen, whichmovement is gaged by index m. The notched disks 0 O are shown as setwith the edge of one tooth abutting the middle of a tooth on theadjacent disk. These disks are fixed to the barrel, so that by theirrotation the work may be revolved in vertical plane.

Q represents a stop or lock lever pivoted to the lock-supporting blockQ, secured on the top of the swiveled head centrally, to which lever ispivoted a plunger-finger q,.passing downwardly through an orifice in thelocksupporting block and adapted to engage into the notches of the disks0 O to lock the work to diiiierent positions, whereby different portionsof the periphery are successively and measurably presented to the tool.By this means the number of teeth to be cut is determined. The block Qis secured by means of a bolt q passing through a slot in the block andtapping into the head L. This bolt and slot allow the block to beclamped to a forward or rearward position for engaging either of thedisks 0 O, as may be desired. When the lock engages one of these disks,one side of each gear-tooth is successively presented to the cutter, andwhen the lock engages the opposite disk the opposite sides of'thegear-teeth, respectively, are successively presented to the,tool.

In order to determine the degree of taper ot the cone gear-teeth invertical plane, I have provided the following devices: The under side ofthe supporting-plate M is inclined and seats upon acorrespondingly-inclined bed R. The plate M and all of its superimposedparts slide as a unit upon base R. Attached to plate M is a rack r,meshing with a gear-wheel r, journaled in post 5. The head L, as shown,is slid on its bed by turning the gear r. (Shown in dotted lines,Fig.4E.) The base R is secured upon the platen by bolts u u. The center ofthe plate M is provided with an index-mark, and the contiguous face ofthe base R is provided with anindex. When the index-mark 'v of thesliding head L is opposite the central index-mark w on the base R, thecenter of the work supported in the swiveled head is on the samehorizontal line with the center of the cutter on the spindle. The cutteris provided with means for adjusting it in vertical plane deli cately tofacilitate the properly centering the work and tool. In order to givethe appropriate taper to the faces of the teeth, so that the teeth andspaces will be wider at the greatest diameter of the cone and least atthe smallest diameter, as required in miter-gears, the gear is rotatedon its axis until the face of the tooth to be cut is in a truehorizontal plane, which can be readily determined by gaging it with theface of the platen. This rotating of the gear to bring the line of theface to be cut into a horizontal plane turns the gear so that thishorizontal line either falls above or below the horizontal line in whichthe tool operates. To compensate for this, the swiveled head islongitudinally slid on its tapered base in either direction to raise orlower the work to bring the horizontal line to be cut opposite to theedge of the tool. Having once determined this adjustment for a givenpiece of work, it is known that the same work requires a movement somany notches above and below center for the opposite faces of the teeth.

w w represent stopscrews in the base-plate R, which may be set to limitthe direction of movement of the swiveled head on its base R in eitherdirection.

The employment of an elongated longitudinal bed with the elongatedlongitudinal power and feed shafts, head-stock elevated above the bed,having a vertical spindle extending down into the bed and havingconnections with the power-shaft and controlling mechanism, and themounting of a platen on ways transverse to the bed, having connec-'tions with the feed-shaft, and means for con= necting and disconnectingthe same not only enables gear-blanks to be cut in a horizontal plane,but it forms an elemental structure and primary operative elements,enabling a multiple of cutting tools and carriages to be operatedindependently on the same machine. By this means a number of differentgears or difierent kinds of gears or dilferent kinds of milling-work canbe done on the same machine at the same time, the work all being on thesame level, the entire top of the machine being free from the drivingmechanisms, giving the greatest possible space and efficiency for theshopwork. Such a machine is of immense practical value, and I do notwish to be limited to the details, except in so far as they areexpressly made part of the claims.

Having described my invention, I claim- 1. In a milling-machineemploying a tool rotary on a vertical axis, a platen, an inclined bed onsaid platen, a head formed with an inclined base seated on said inclinedbed, an index on said inclined members adapted to register the alinementof the axis of the work ICO Iid

with the cutter, means for adjusting said head above or below saidcenter, and means on the head for supporting and rotating a mitergear,substantially as specified.

2. I11 a-milling-machine, a platen, a tapered base mounted on saidplaten, a work-support mounted on said taper base, means for verticallyalining the center of the cutter with the center of the work, an indexregistering such alinement, and means for vertically adjusting theWork-support to predetermined positions either side of said position ofalinement, substantially as specified.

3. In a miter-gear milling-machine, a Worksupport, a sleeve journaledtherein adapted to hold a miter-gear at one of its ends, a pair ofnotched disks secured to the other end of said sleeve, the notches ofone disk being adapted to present the right-hand edges of the gear-teethsuccessively to the tool, and the abutting-disk being adapted to presentthe left-hand edges of the gear successively to the tool, and means onthe Work-support for engaging and locking either of said disks,substantially as specified.

4. In a milling-machine employing a tool rotary on a vertical axis, aplaten, an inclined base on said platen, a head adjustablelongitudinally on said base and adapted to be retated in a horizontalplane, and a miter-gear support rotatively mounted in said'head, substantially as specified.

5. In a milling-machine employing a tool rotary on a vertical axis, aplaten, an inclined bed thereon, a head longitudinally adjustable onsaid base, whereby the work may be centered with, and raised and loweredrelative to the tool, means for rotating said head horizontally, amiter-gear support in said head adapted to be rotated in vertical plane,and means for securing said head and gear-support in different positionsof adjustment, substantially as specified.

In testimony whereof I have hereunto set my hand.

HENRY MCCOY NORRIS.

Witnesses:

OLIVER B. KAISER, PEARL MOMIOHAEL.

